I don't think that is an Japanese-African. I think that is a girl who is following the style called, "Ganguro". This style does look like the "black face" kind of style used in America, but, they aren't trying to mock us but trying to look more like black and dark skinned people. In the style they usually wear bright hair along with glittery and dark make-up. I hope this shed some light why she looks like that.